Glass grinding and polishing machine



Oct. 10, 1933.

H. J. CAPELLMAN, sa 1,930,383 GLASS GRINDING AND POLISHING MACHINE FiledMay 23. 1930 2 Sheets-Sheet l 0 Z7 4 g ZG HATToRNEY til Patented Oct.10,

UNITED sTATEsY This provements in GLAss GRTNDING AND PoLIsHTNG MACHINEHubert Capellman,

y Application'May 7 Claims.

invention relates to certain novel imglass grinding and polishingmachines and has for its principal object the provision of an improvedconstruction of this character which will be highly efficient in use andeconomical in manufacture.

Another object of the sion of Va construction of herein by means ofwhich plates or like articles may invention is the provithe characterescribed the edges ci glass be rapidly finished with a minimumexpenditure of labor.

The new finishing machine includes a movable abrasive, a along thetrackway trackway,

to and from the abrasive,

a carriage movable and article holding means cn the carriage movable,

relative to the carriage, to and from the abrasive; and other objects ofthe invention are:

to provide a novel article -holding means; to provide a novelarrangement of the article holding means on the novel arrangement ingmeans, relative to -the abrasive.

Other objects will appear The invention consists in carri for moving thearticle-holdthe carriage, to and from age; and to provide a hereinafter.the `novel combination and arrangement of parts to `be hereinafterdescribed and claimed.

The invention will be best understood by reference to the accompanyingdrawings, showing the preferred form of construction and in which: Fig.1 is a sectional view taken substantially on-the line 1-1 in'Fig.

2, showing a preferred Yconstruction of themachine;

Fig. 2 is a sectional View substantially on the line2-2 in Fig. 1';

Fig. 3 is a detailed stantially on the line 3 sectional view taken sub-3 in Fig. 1;

Fig. 4 is a fragmentary perspective view showing certain features of theinvention;

Fig. 5 is a perspective view of a unit embodied in the invention;

Fig. 6 is a modiiied fo block of abrasive material embodied in vention;and Fig. 7 is a assembled for use.

Among the objects of which will expeditiously provision of a machineconstruction of a the inrm of perspective View of the invention thisinvention is the grind and polish the edges of glass plates which areadapted to be mounted and used in various ways in which such plates areused in the arts such as in automotive vehicles windshields, doors,

or the like. Referring t a preferred constructio shown, and referring mo the drawings wherein n of the invention is ore particularly to Fig.

Sr., South Chicago, Ill.

23, 1930; Serial N0. 455,117

'7 the invention includes PATENT OFFICE a carriage 10 which is adaptedto support a plurality of glass plates '11 and this carriage is adaptedto be fixed in position on a housing 12 in which are disposed mechanismsactuated by a motor 13 which re- 5D ciprocally moves a slab 14 ofsuitable abrasive material against theedges of the glass plates. Inarranging the invention for use, carriage -10 platform 1`5 which isslidably mounted on a includes the braces to leg portions 18 16 and 17which are secured by suitable connecting Yelements such as nails 19 orthe like. Provided on the platform are guidin are adapted to communicadisposed in alignment with provided in the housing-12.

includes legs troughs 20 and 21 so l1 are inserted into position,described presently, the carriage moved slidably 'from the platformhousing 12. 1

g troughs 20 which te with and to be guiding troughs 21 "m The carriage10 22 which*y are slidable in the that when the glass plates in a mannerto be 10 `may' be Q5 15 onto the The carriage 1o includes a movabletable -23 in which the plates 11 are secured in a manner to be describedpresently and this table is movable vertically through the medium of abar 24 and counterbalance weights 25 which are supported by cables whichare attached to 26 suspended on pulleys 21,

the table23. Included in Ythe carriage 10 are side portions 28 whichprovide supporting legs Disposed between the 29 and foot portions 30.legs '29 and attached thereto by means of suitable connecting elementssuch as screws 31 are end portions Referring now particularly it will beseen that l to Figs. 1 and 2, 5 there are provided on one side of thecarriage 10 two similar-brackets 33 which provide right angularlyextending flanges as screws 35. Projecting these studs are arms tions ofwhich bar .proved manner such mounted on the arms 3'7 by 37, intheopposite end por- 24 is mounted in any apas by riveting. Pivotally meansof suitable connecting elements such as studs 38 are the end portions 39of the table 23. approved manner to these en the table 23 are the cableopposite ends, are

Secured in any d portions 39 of s 26 which, at their secured in anyapproved manner to the counterbalance weights 25. `These cables areguided tatably supported on stub in the pulleys 27 shafts which are ro-40, and these shafts 40 are supported by brackets 41 which include footportions 42. The foot portions 42 are secured to the end portions'32 bymeans of suitable connecting elements such as screws 43. It will bemanifest, therefore, that when the bar 24 is raised and lowered on thesupporting studs 36 the table 23 will likewise be raised and loweredsince the bar 24 is attached to the end portions 39 of the table and itwill be seen that as the table 23 is raised the counterbalance weights25 will be lowered on cables 26.

Included in the table 23 and extending between the end portions 39 areside portions 44 and 44 Which are secured to the end portions .',thisconnection there opening 45 in the side ing through this opening is ahub flanged portion 56 and this collar is position, I provide an arm 58which ,collar 52 and discs 39 in any approved manner such as by=we1dingand supported by these sideportions V39 are the mechanisms now to bedescribed forclamping the glass plates 1l in position and for turningthese plates to expose the diierent edges of the plates to the action ofthe abrasive slab 14'. In is provided a cylindrical 46, at the inner endof which is a disc 47 carrying a ball race 48. A centrally disposedcylindrical opening is formed in the hub 46 and projecting through this,opening is a shaft 49 which carries a disc 50at its inner end.Diametrically opposed aligned openings are provided in the discs 47and'50 and these openings motion. Carried by the hub 46 exteriorly ofthe side portion 44 of the table is a collar 52 whichincludes a securedto the hub 46 by means of a stud 53. Referring particularly to Fig. 5 itwill be seen that a notch v57 is provided in the flanged portion -lar52.r To effectuate locking the hub 46V and Aattached disc` 47, and shaft49 and attached disc 56 of -col- 50 against rotatory movement when 'theglass plates 11 and resilient plates 55 are is secured to the sideportion 44 of the table 23 by means of a suitable riveted stud 59. Atongue is formed in the arm 581 and when this tongue Lis engaged in thenotch 56 it'will be seen that the rotatory movement. The outer endthreaded interiorly portion of the yhub 46 is vvas indicated at 53 and athreaded thumb screw 54 is threaded therein. It will be manifest,therefor,ethat when the thumb screw 54 is. threaded into the hub 46 theinner end of this screw will abut theouter end of shaft 49' and as thethumb screw 54 is tightened the shaft `49 and` attached disc 50 willprovided for securing a gripping action between and against the glassplates.

A cylindrical opening is provided in the side portion 44 of `table 23and projecting through this opening is a hub 61 which carries a disc itsinner end and portion 44 and project- SCIGWS 83.

one end of which is secured to the hub 61 and the opposite end of whichis attached to the collar in any approved manner such as by screw 67. Aslot 68 is provided in the collar 65 and projecting upwardly in thisslot is the key 64. It will be apparent, therefore, that when collar 65is retracted against the force of spring `66 the collar will be guidedon the hub 61 by means of the key 64 and when collar 65 is in retractedposition the hub 61 and attached disc 62 are rotatable therewith sincethe key 64 on hub 61 engages the collar 65 in the slot 68. Suitableradial arms 69 are provided inthe collar 65 to facilitate retracting thecollar 65 and likewise to facilitate rotating the collar 65, hub 61 anddisc 63.

Assuming that the glass plates 11 and adjacentresilient plates 55 havebeen disposed in position, as best shown in Figs. 2 and 7, it will bemanifest that when the thumb screw 54' is screwed lnwardly the inner endthereof end of hub 49 and disc'56 will be forced into grippingengagement against the resilient plates 55 and the glass plates 11 willbe forced against the discv 62. In this manner the glass plates 11 areretained in position during the grinding and polishing of the edgeportions of the glass plates which action will be described hereinafter.To facilitate turning the different edges of theplates into polishingposition I provide a iiangedportion onthe collar 65 and formed at 90intervals in this flanged portion are suitable notches 71 which areadapted to lengage a tongue 72 which pro- It will be maninotches 71,preventing rotation of disc 62, and in this manner the glass plates aresecured in polishing position and prevented against rotatory movementduring the grinding and polishing operationy to be described presently.

The housing 12 is preferably mounted on any fiat surface providing asuitable base 76 to which g are secured together by means of suitableconnecting elements such as screws 75. Formed in the end portions 74 onthe inner sides thereof are offset portions 78 which provide shoulders79 and mounted on these shoulders are rails 80 which have longitudinallyextending slots 84 formed therein providing iianges 81 and 82. Theserails 82 are secured to the sides 73 of the housing by means of suitableconnecting elements such as There are nally extending iianges 85interiorly of which and these plates in turnv provided on the rails 82longitudi- 'un no aregrooves 86, and shelves vany approved manner suchas vby Ldisposed on the and mounted on 87 are provided n- In lthisconnection the carriage 10 in means of suitable pins 89 and these wheelsinclude flanges 90 which travel in grooves 86. There is preferably oneof these wardly Vof .the grooves 86.v wheels 88 are mountedpn wheels 88at. each corner of the carriage 10 and ywhen 'the carriage .'10 isshelves 87 the wheels 88 guide the carriage and prevent lateral movementthereof. a

Transversely extending plates .91 :are mounted slidably in the slots 84provided in the rails 82 the upper surface of these plates Vis alongitudinally extending plate 92 which supports a table 93 is mountedand this table includes upwardly extending end portions 93. Suitableconnecting elementssuch as threaded screws 94 secure together forreciprocalmovement the slab 14, table 93, plate 92 and plates 91.lTheheads of these Vscrews areV preferably rcountersunk and the threadedend portions Acarry threaded nuts 95. A bracket 96 is connected to theplate 92 at the .under side kthereof by means of suitable screws 97 orthe like. A suitable opening 1s provided in .bracket 96 and projectingthrough this opening and ,through openings formed in anarm 97 is `a pin98 which carries keys 99 to effectuate movbetween the arm 97 andtheeffectuate reciprocal rectilinear able connection bracket 96. To

vmovement of the abrasive slab 14 and attached units I provide aneccentric arm 100,r the upper end portion of which is journaled on a pin101 which projects through openings provided 1n arm 97 and in arm 100and keys 102 are vprovided in suitable openings formed in the endportions of pin 101. The lower end portion of arm 97 is rotatablymounted on a rod 128 which is mounted in suitable openings formed in theside walls 73 of the housing 12 and this rod provides a bearing surfaceof the arm 97. Spacing collars 129 are provided on the rod 128.

Provided at the end portion of the eccentric arm 100, opposite the endconnected to arm 97, is a suitable split bearing 103 of any approvedtype and this bearing is mounted on an arm 104 which projects from aneccentric wheel 105. The eccentric wheel 105 is rigidly mounted on androtatable with a shaft 106 which is journaled in asuitable bearing 107which is attached to one of the side Walls 73 of the housing 12 by meansof suitable connecting elements such as screws 108. The shaft 106projects outwardly from the housing 12 Yand is connected in any approvedmanner to a suitable source of motive power such as motor 13. In thisconnection I provide a housing 109 in which suitable gears are housedfor effectuating connection between the motor 13 and shaft 106.

It will be manifest, therefore, that when the glass plates 1l aredisposed in position in the carriage 10 and the motor 13 operated therotatcry movement of shaft 106 operated by motor 13 will be convertedinto reciprocal rectilinear movement by means of the eccentric wheel 105and arm and thus reciprocal rectilinear movement will be imparted to thepolishing slab 14 and attached table 93 which are carried on plate 92.It will be seen, therefore, that when the glass plates 11 are disposedin position in the carriage 10 in the manner described above, with oneedge portion of the plates disposed on slab 14, the reciprocal action ofslab 14 against the ,side wall 73 of the housing on'which the slab 14`edges `of the plates 11 will effectuate the polishing of the edges oftheplates;-

In order to prevent any 'tendency to longituf dinal movementof'thecarriage 10 when the slab 14 `andassociated parts are in operation Ipro- L which are attachedpto one 12 Vby means o'f Vsuitableconnectingelements such as screws 111 and these bracket arms carry a rod 112 onVwhich vide bracket arms 110 is.Y mounted a dog 113 and this dog includesa Y '114 which is adapted to be 1inprovided in a block 115 tongueportion serted into a notch 123 which is secured to the carriage 23 by.means of suitable screws 116.

To collect the dust issuing from the ,plates 11 andthe abrasive 14,which may be of .any suitable material such as carborundum or the like,I provide receptacles 117 in the housing 12 and communicating with thesereceptacles are openings 118 provided between chutes 119` and the endwalls 74 of housing 12. The chutes 119 are attached to the inner sidesof the side walls 73 of the housing 12 in any approved manner such as bywelding. It will be seen, therefore, that the dust produced duringishing operation will be diverted downwardly between the rails 80 intothe receptacles 117 which maybe secured to the bottom or end walls ofthe housing in any suitable manner `such as by Welding. Further toprevent the yescape of dustI provide a'housing 120 over the polishingslab `14 and formed in'this housing is an opening 121 of suitable sizeto enable the plates 1l to be lowered therethrough into contact with thepolishing slab 14. Y

VLugs 124 are vattached tothe housingv l12' by means of screws 125 andthese lugs include rightangularly extending arms 127v which projectinwardly from the side walls 73 of the housing. When the carriage 10 isin position on the housing 12 the arm portions of these lugs restadjacent the foot portions 30 of the carriage and in this manner preventthe carriage from being tipped sidewardly.

the grinding and pol- I In Fig. 6 a modified form of construction for120 the polishing slab 14 is provided and in this instance the slab hasgrooves 122 formed therein in spaced relationship and in use the edgesof the plates 14 are disposed in and guided in these grooves.

From the foregoing description of my invention it will be seen that Ihave provided a glass grinding and polishing machine which isparticularly adaptable for grinding and polishing the edges of glassplates automotive vehicles or in like uses and which while effectivelyserving its many other objects will be highly efficient in use andeconominal in manufacture.

While I have illustrated and described the preferred form ofYconstruction for carrying my invention into effect, this is capable ofvariation and modification, without departing from the spirit of theinvention. I, therefore, do not wish to be limited to the precisedetails of construction set forth, but desire to avail myself of suchvariations and modifications as come within the scope of the appendedclaims.`

Having thus described my invention, what I claim as new and desire toprotect by Letters Patent is:

1. In a finishing machine, the combination with a trackway, of acarriage adapted to be moved along said trackway and including means forsupporting a plurality of articles to be nnsuch as are used in lveying'abrasive m 'ished, finishing mechanism inclu onto which saidcarriageV may nishing mechanism including finishing member, and chuteing member.

2. In a finishing machine, t with 'a trackway,

ding a trackway be moved, said a reciprocatory members for conaterialaway from said nishhe combination of a carriage adapted tobe moved alongsaid trackway and including means for, supporting a4 plurality of articles to be iinished, 'finishing mechanism including aA track- Way ontowhich' said carriage may be moved from the first-mentionedtrackway, saidfinishing mechanism including a reciprocatory nishing member, chutemembers for sive material conveying abraaway from said finishingmember,l

and pan members adapted to receive abrasive material discharged fromsaid 3. In a machine for simultan or guiding corresponding parts of theedges of a chute members. eously polishing peripheral plurality ofarticles, a trackway, a

movable abrasive, a carriage for the articles,

movable along `the trackway, mechanism mounted on and. to the carriageto and from that selected corresponding part .eral edges of the articlesmay be abrasive when thelatter is movi .nism holding the articles in thec selected edge parts ythereof in c article carrying movable relativevthe abrasive, so

s of the periphabraded by the ng, Vsaid mechaarriage with the ontactWith the abrasive, and including means for' simultaneously .revolvingall the articles, when .moved from the abrasive, so parts thereof may beabraded the mechanism is that other edge when -the mechanism is movedback to theabrasive.

4. An article nishing machine, comprising a movable abrasive] atrackway, riage movable along the trackw an article caray` to and fromvto and from Vthe abrasive, said and from the abrasive,

means for revolving the faces thereof successively abrasive.` y 1 .f 5.An article nishing machine, comprising a movable abrasive, a trackway,an article carriage movable along the trackway to and from the abrasive,counterbalanced article-holding means on the carriage movable, relativeto the carriage, means including means for revolving the articles tobring surfaces thereof successively into contact with the articles tobring surinto contact with the abrasive, anda member'movably mounted on'said carriage for moving -said article-holding means relative to thecarriage.

6. An article nishing machine, comprising a movable abrasive, anVarticle carriage, articleholding means on the carriagel movable,relative to and from the abrasive, means on the carriagecounter-balancing the article-holding means, and a member movablyVmounted on the carriage for moving the articlecarriage, toward

